JUMP pulled its bikes from a number of markets in the last few months

Uber -owned JUMP pulled its bikes and scooters from a handful of markets over the last few months. The latest city affected is San Diego, where JUMP’s bikes and scooters will no longer be available as of September 19, with the exception of two naval bases in the city.

“We understand this may have a huge impact on your day-to-day commuting and we regret the fact that we can no longer provide this service to you,” JUMP wrote in an email to its San Diego customers.

“We agree with local elected officials in San Diego who’ve said current micromobility regulations foster an unsustainable operating environment, which is why we’re ending our operations as of today,” an Uber spokesperson told TechCrunch. “We look forward to working with the city to develop more sensible regulations.”

“We are winding down our current JUMP e-bike operations in Atlanta,” an Uber spokesperson told TechCrunch. “We will continue to offer JUMP scooters and look forward to continuing conversations with city leaders on how we can work together to expand transportation options.”

“Our goal is to make JUMP electric bikes and scooters a sustainable part of the transportation ecosystem,” an Uber spokesperson told TechCrunch. “We currently have JUMP products in over 25 cities worldwide and we make operational decisions on a case by case basis.”

It’s likely those case-by-case decisions are at least partially fueled by unit economics — looking at everything from ridership to vandalism to theft.